Triethylamine → Methyl {1-[1-(4-chlorophenyl)ethyl]azetidin-3-yl}(3,5-difluorophenyl)acetate

関与物質

反応手順

A solution of 0.015 g (0.054 mmole) of methyl azetidin-3-yl(3,5-difluorophenyl)acetate, 0.020 g (0.101 mmol) of 1-(4-chlorophenyl)pentan-1-one and 0.015 mL (0.12 mmol) of triethylamine in 5 mL of dichloroethane was stirred at room temperature. After 5 min, 0.050 g (0.237 mmol) of sodium triacetoxyborohydride was added and the mixture was stirred at room temperature for 6 h. The reaction was quenched by addition of saturated K2CO3 solution and the mixture was partitioned between 10 mL ether and 2 mL saturated K2CO3 solution. The layers were separated and the organic layer was dried over Na2SO4, and concentrated. The residue was purified by reverse phase chromatography (Waters Xterra C18, 19 mm×10 mm) using a gradient of CH3CN—H2O-Et3N (20:80:0.1 to 60:40:0.1). Homogenous fractions were pooled and concentrated to afford the title compound as a mixture of isomers; Mass Spectrum: m/e=422 (M+1 35Cl and 424 (M+1 37Cl). Mass Spectrum: m/e=422 (M+1 35Cl and 424 (M+1 37Cl).

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